Electronics Forum | Mon Oct 20 12:42:34 EDT 2008 | robinj
Any pictures of those pads prior to printing? Or how does the incoming boards look?
Electronics Forum | Thu Mar 02 07:40:46 EST 2000 | Roni Haviv
Allmost forgot: The "black pad" is simply the oxidized Nickel.
Electronics Forum | Thu Mar 02 07:40:46 EST 2000 | Roni Haviv
Allmost forgot: The "black pad" is simply the oxidized Nickel.
Electronics Forum | Sun Jul 28 15:29:06 EDT 2002 | davef
There's background and links to papers on black pads in the fine SMTet Archives.
Electronics Forum | Wed Oct 09 12:46:10 EDT 2002 | russ
This is caused by PCB suppliers process. Search the fine SMTNET archives for this as it has been discussed many times. Russ
Electronics Forum | Fri Jun 16 07:46:42 EDT 2006 | davef
We use HASL and immersion silver, depending on the board design.
Electronics Forum | Tue Dec 05 09:16:06 EST 2006 | russ
I do not see this same scenario. Russ
Electronics Forum | Wed Dec 06 11:17:26 EST 2006 | dphilbrick
Not to my knowledge it is not.
Electronics Forum | Wed Dec 20 23:45:51 EST 2006 | Jack
Hi all, Any comment after read this article? Best wishes, Jack
